.page-about {
  --about-line: rgba(143, 163, 176, 0.28);
  --about-line-soft: rgba(143, 163, 176, 0.14);
  background: var(--deep);
  color: var(--cream);
  padding-block: clamp(28px, 5vw, 56px) clamp(48px, 7vw, 88px);
  font-family: var(--font-ui);
  overflow-x: hidden;
}

.page-about .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-about .page-head {
  max-width: 38ch;
}

.page-about .page-head__kicker {
  font-family: var(--font-num);
  letter-spacing: 0.14em;
  color: var(--green);
}

.page-about .page-head__title {
  text-shadow: 0 0 28px rgba(57, 240, 122, 0.18);
}

.page-about .page-head__lead {
  color: rgba(244, 241, 232, 0.82);
}

/* 首屏主图 */
.page-about .about-hero {
  margin: clamp(26px, 4vw, 44px) 0 clamp(34px, 5vw, 60px);
  border: 2px solid var(--about-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--inner);
}

.page-about .frame img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .frame__caption {
  display: block;
  padding: 12px 18px 16px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(244, 241, 232, 0.62);
  border-top: 1px solid var(--about-line-soft);
}

/* 起点章节：宽窄不对称 */
.page-about .about-origin {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 40px);
  border-top: 1px solid var(--about-line);
  padding-top: clamp(24px, 4vw, 40px);
}

.page-about .about-origin__text p {
  max-width: 37ch;
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.86);
}

.page-about .about-origin__aside {
  align-self: start;
  background: var(--inner);
  border: 2px solid var(--moss);
  border-radius: var(--radius);
  padding: 22px 20px 24px;
}

.page-about .about-aside__k {
  margin: 0 0 4px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green);
}

.page-about .about-aside__v {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--cream);
}

.page-about .about-aside__v:last-child {
  margin-bottom: 0;
}

/* 时间线 */
.page-about .about-timeline {
  margin-top: clamp(46px, 7vw, 84px);
  border-top: 1px solid var(--about-line);
  padding-top: clamp(24px, 4vw, 40px);
}

.page-about .section__head {
  max-width: 40ch;
  margin-bottom: clamp(24px, 4vw, 38px);
}

.page-about .section__note {
  color: rgba(244, 241, 232, 0.66);
  line-height: 1.8;
}

.page-about .tl {
  list-style: none;
  margin: 0;
  padding: 0 0 0 4px;
  position: relative;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--green) 0%, var(--gold) 55%, var(--moss) 100%);
  opacity: 0.75;
}

.page-about .tl__item {
  position: relative;
  padding: 0 0 clamp(26px, 4vw, 38px) 40px;
}

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 5px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid var(--green);
  background: var(--deep);
  box-shadow: 0 0 12px rgba(57, 240, 122, 0.4);
}

.page-about .tl__item--current::before {
  border-color: var(--gold);
  box-shadow: 0 0 14px rgba(242, 179, 61, 0.5);
}

.page-about .tl__mark {
  margin: 0 0 8px;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-about .tl__body h3 {
  margin: 0 0 8px;
  font-size: clamp(17px, 2.4vw, 21px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-about .tl__body p {
  margin: 0;
  max-width: 36ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.78);
}

.page-about .about-tl-figure {
  margin: clamp(10px, 2vw, 20px) 0 0;
  border: 2px solid var(--about-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--inner);
}

/* 窄幅长注 */
.page-about .about-note {
  margin-top: clamp(46px, 7vw, 84px);
  background: linear-gradient(135deg, rgba(46, 90, 75, 0.55) 0%, rgba(18, 41, 61, 0.9) 72%);
  border-radius: var(--radius);
  padding: clamp(26px, 5vw, 52px) clamp(20px, 4vw, 46px);
  max-width: 62ch;
}

.page-about .about-note .section__title {
  margin: 10px 0 18px;
}

.page-about .about-note p {
  max-width: 38ch;
  margin: 0 0 16px;
  line-height: 1.9;
  color: rgba(244, 241, 232, 0.86);
}

.page-about .about-note p:last-child {
  margin-bottom: 0;
  color: var(--gold);
}

/* 团队 */
.page-about .about-team {
  margin-top: clamp(46px, 7vw, 84px);
  border-top: 1px solid var(--about-line);
  padding-top: clamp(24px, 4vw, 40px);
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 40px);
  align-items: start;
}

.page-about .about-team__text .section__title {
  margin: 10px 0 16px;
}

.page-about .about-team__text p {
  max-width: 37ch;
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.84);
}

.page-about .about-team__figure {
  margin: 0;
  border: 2px solid var(--gold);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--inner);
}

.page-about .rolelist {
  list-style: none;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
}

.page-about .rolelist__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 16px;
  align-items: baseline;
  padding: 16px 18px;
  background: var(--inner);
  border-left: 3px solid var(--clay);
}

.page-about .rolelist__num {
  font-family: var(--font-num);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--green);
  grid-row: span 2;
}

.page-about .rolelist__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--cream);
}

.page-about .rolelist__desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(244, 241, 232, 0.7);
}

/* 服务规模 */
.page-about .about-scale {
  margin-top: clamp(46px, 7vw, 84px);
  border-top: 1px solid var(--about-line);
  padding-top: clamp(24px, 4vw, 40px);
}

.page-about .about-scale .section__title {
  margin: 10px 0 24px;
}

.page-about .scalegrid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
}

.page-about .scalegrid__cell {
  background: var(--inner-2);
  border-radius: var(--radius-sm);
  padding: 20px 18px 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .scalegrid__cell:nth-child(2) {
  background: rgba(46, 90, 75, 0.55);
}

.page-about .scalegrid__cell:nth-child(3) {
  background: rgba(184, 92, 66, 0.42);
}

.page-about .scalegrid__cell:nth-child(4) {
  background: rgba(242, 179, 61, 0.2);
}

.page-about .scalegrid .metric__num {
  font-family: var(--font-num);
  font-size: clamp(30px, 5vw, 44px);
  font-weight: 700;
  line-height: 1;
  color: var(--green);
  letter-spacing: -0.02em;
}

.page-about .scalegrid__cell:nth-child(3) .metric__num,
.page-about .scalegrid__cell:nth-child(4) .metric__num {
  color: var(--cream);
}

.page-about .scalegrid .metric__label {
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(244, 241, 232, 0.76);
}

.page-about .about-scale__foot {
  max-width: 44ch;
  margin: 24px 0 0;
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.72);
}

/* 长期做法 */
.page-about .about-hold {
  margin-top: clamp(46px, 7vw, 84px);
  border-top: 1px solid var(--about-line);
  padding-top: clamp(24px, 4vw, 40px);
}

.page-about .about-hold .section__title {
  margin: 10px 0 24px;
}

.page-about .holdgrid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .holdgrid__card {
  background: var(--inner);
  border: 2px solid var(--about-line);
  border-radius: var(--radius);
  padding: 22px 20px 24px;
}

.page-about .holdgrid__card.card--gold {
  border-color: var(--gold);
  background: linear-gradient(160deg, rgba(242, 179, 61, 0.14) 0%, var(--inner) 60%);
}

.page-about .holdgrid__card h3 {
  margin: 10px 0 10px;
  font-size: 18px;
  font-weight: 800;
  color: var(--cream);
}

.page-about .holdgrid__card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.78);
}

.page-about .card__tag {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--green);
}

/* 收束 */
.page-about .about-next {
  margin-top: clamp(46px, 7vw, 84px);
}

.page-about .about-next__inner {
  border-top: 2px solid var(--green);
  padding-top: clamp(24px, 4vw, 36px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-about .about-next .section__title {
  margin: 0 0 14px;
}

.page-about .about-next p {
  max-width: 40ch;
  margin: 0;
  line-height: 1.9;
  color: rgba(244, 241, 232, 0.84);
}

.page-about .about-next p a {
  color: var(--green);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-start;
}

/* 桌面端 */
@media (min-width: 780px) {
  .page-about .about-origin {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: clamp(30px, 5vw, 64px);
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    gap: clamp(30px, 5vw, 60px);
  }

  .page-about .rolelist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .scalegrid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .holdgrid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-next__inner {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-about .about-next__actions {
    justify-content: flex-end;
  }

  .page-about .tl__item {
    padding-left: 48px;
  }

  .page-about .about-tl-figure {
    margin-left: 48px;
    max-width: 62%;
  }
}

@media (min-width: 1020px) {
  .page-about .about-hero {
    margin-left: clamp(0px, 2vw, 28px);
    margin-right: clamp(0px, 6vw, 96px);
  }

  .page-about .about-note {
    margin-left: auto;
  }

  .page-about .tl::before {
    left: 11px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}
<<<END>>>